What is CVE-2026-66390?

CVE-2026-66390 is a medium-severity vulnerability in Apache Software Foundation Wicket, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-07-27.

How severe is CVE-2026-66390?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Apache Software Foundation Wicket

CVE-2026-66390

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Wicket. This issue affects Apache Wicket: from 9.0.0 through 9.23.0, from 10.0.0 through 10.9.0. Users are recommended to upgrad…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Apache Software Foundation Wicket — versions 9.0.0, 10.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-66390?: CVE-2026-66390 is a medium-severity vulnerability in Apache Software Foundation Wicket, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-07-27.
How severe is CVE-2026-66390?: Medium severity. CVSS v3 base score is 6.1 out of 10.